Steam-generator



(b lo ModeL) 2 sheets sheet 1.

W. A. HODGKINS.

STEAM GENERATOR. No. 334,950. Patented Jan. 26, 1886.

(No Model.)

2 Sheets-Sheet 2. W. HODGKINS.

STEAM GENERA TQR.

Patented Jan. 26, 1886.

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WILLIAM A. HODGKINS, OF LAWVRENCE, MASSACHUSETTS.

STEAlVl -GENERATOR.

SBPECIFICATION forming part of Letters Patent No. 334,950, dated January 26, 1886. Application filed July 9, 1885. Serial No. l71,086. (No model.)

To all whom/it may concern.-

Be it known that I, WILLIAM A. Hone- KINs, of Lawrence, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Steam-Generators, of which the following is a specification.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure l is a central vertical section of a generator embodying my invention. Fig. 2 is a plan view of one of the coils and its immediate connection removed. Fig. 3 is an elevation of the same.

A represents the furnace, in this instance a portable one, but which may be of any desired construction.

B is the steam-dome; O, the smoke-bonnet, into which ports 0 from the furnace open; and D is the water-gage, all constructed sub stantially as usual.

E E E are sections of tubing constituting, practically,one tube or pipe. These sections are provided with shoulders e,suitably packed, and are held together by the inner tube or pipe, F, provided with suitable apertures,f, said pipe F having rigidly secured to it near its lower end a flange or disk, 9, which supports a cup, h, in which the lowest section, E, lies, and threaded at its upper end, which is provided with a nut, t, and reverse-cup j, by means of which the sections are drawn and held closely together. The upper section, E, is connected by a passage or port, G, with the steam-dome B, as shown, and the entire sec tional tube is covered or surrounded by an extension, A, from the furnace.

H H Hare sections of tubing constituting, practically,one tube, provided with shoulders k and suitably packed at those points.- The upper section, H, is rigidly secured to or made integral with the top of the furnace A, (or bottom of the steam-dome 13,) and is connected with the steam-dome by ports J. The sections are held together by means of the bolt Z, the upper end of which screws into the steam-pipe M, (provided with suitable apertures, 1a,) and the lower end of which is threaded and provided with a nut, n, which sets up against a cup, 0, in which the lowest section, H, lies.

N is a steam-tube of helical spiral shape, its largest and lowest coil connected with the section of tubing E" and its smallest and highest coil connected with the section of tubing H; and P is a similar steam-tube similarly connected with the sections of tubing E and The water enters the pipe F at its upper end and passes into the sectional tubing E E E through the apertures f, and thence into the coils N P. As the heat strikes these coils, the contents, by a well-known principle, seek the highest points therein,which are of course the smallest c'oils,connecting directly with the sectional tube H H H, and the steam passes from them through the ports J into the steamdome B, and thence through the apertues m into the steam-pipe M for use. The water returns through the passage G into the sectional pipe E E E.

There may be as many steam-tubes N P and as many sections of tubing connected with their opposite ends as desired, and as many helical spiral .coils as deemed best in each steam-tube.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1's- In a steam-generator, the combination of the sectional tubes E E E, one or more of which are connected with the outer and lower end of a steam-tube made in helical spiral shape, the sectional tubes H H H, one or more of which are connected with the inner and upper end of such steam-tube, the furnace A, steam-dome B. ports J ,and passage G, and means, substantially as described, for holding the sections of said sectional tubes together, substantially as and for the purpose hereinbefore set forth.

WILLIAM A. HODGKINS.

Witnesses:

N. B. EMMONT, A. W. GREGG. 

